Cab



FIG. 1 is a perspective view of a cab showing our design;

FIG. 2 is a left elevational view thereof;

FIG. 3 is a right elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a top plan view thereof, with no ornamentation being claimed for a bottom plan thereof.

The phantom lines being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a cab, as shown and described. 